Bug: Parsing minimum version number crashes for single-digit version numbers

[noblemaster]

RoboVM grade build crashes if the "MinimumOSVersion" defined in Info.plist.xm is a single-digit value (e.g. "7"). A StringIndexOutOfBoundsException is thrown.

Crashing Info.plist.xml:

  <key>MinimumOSVersion</key>
  <string>7</string>

Working Info.plist.xml:

   <key>MinimumOSVersion</key>
   <string>7.0</string>

File & Line# in Question:

robovm/compiler/src/main/java/org/robovm/compiler/target/ios/IOSTarget.java

Line 353 in ef09190

majorVersionNumber = Integer.parseInt(minVersion.substring(0, minVersion.indexOf('.')));

Suggested fixes:

• Catch "StringIndexOutOfBoundsException" in addition to "NumberFormatException" otherwise the resulting error message is nonsensical (I didn't have a clue what broke because the error message in the try-catch isn't reached because the exception is not a number format exception).
• Allow single-digit numbers for MinimumOSVersion. I think that's supported by iOS anyway.

[ntherning]

Looks like at least the iOS simulator can handle single digit numbers. We should make sure it doesn't fail within RoboVM.

[ntherning]

Fixed!